62 lines
3.6 KiB
Python
62 lines
3.6 KiB
Python
#!/bin/python
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# -*- coding: utf-8 -*-
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import difflib
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import textwrap
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import time
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import re
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#import fenrir.utils.debug
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class screenManager():
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def __init__(self, device='/dev/vcsa'):
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self.vcsaDevicePath = device
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def analyzeScreen(self, environment):
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# read screen
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currTTY = open('/sys/devices/virtual/tty/tty0/active','r')
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environment['screenData']['newTTY'] = currTTY.read()[3:-1]
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currTTY.close()
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try:
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vcsa = open(self.vcsaDevicePath + environment['screenData']['newTTY'] ,'rb',0)
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environment['screenData']['newContentBytes'] = vcsa.read()
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vcsa.close()
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except:
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return environment
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# get metadata like cursor or screensize
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environment['screenData']['lines'] = int( environment['screenData']['newContentBytes'][0])
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environment['screenData']['columns'] = int( environment['screenData']['newContentBytes'][1])
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environment['screenData']['newCursor']['x'] = int( environment['screenData']['newContentBytes'][2])
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environment['screenData']['newCursor']['y'] = int( environment['screenData']['newContentBytes'][3])
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# analyze content
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environment['screenData']['newContentText'] = str(environment['screenData']['newContentBytes'][4:][::2].decode('WINDOWS-1250'))
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#environment['screenData']['newContentText'] = str(environment['screenData']['newContentBytes'][4:][::2].decode('cp1252')).encode('utf-8')[2:]
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environment['screenData']['newContentAttrib'] = environment['screenData']['newContentBytes'][5:][::2]
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#environment['screenData']['newContentText'] = '\n'.join(textwrap.wrap(environment['screenData']['newContentText'], environment['screenData']['columns']))[:-2]
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environment['screenData']['newContentText'] = re.sub("(.{"+ str(environment['screenData']['columns'])+"})", "\\1\n", str(environment['screenData']['newContentText']), 0, re.DOTALL)
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if environment['screenData']['newTTY'] != environment['screenData']['oldTTY']:
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environment['screenData']['oldContentBytes'] = b''
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environment['screenData']['oldContentAttrib'] = b''
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environment['screenData']['oldContentText'] = ''
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environment['screenData']['oldCursor']['x'] = 0
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environment['screenData']['oldCursor']['y'] = 0
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# changes on the screen
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if environment['screenData']['oldContentBytes'] != environment['screenData']['newContentBytes']:
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if ((len(environment['screenData']['delta']) < 4) or environment['screenData']['oldTTY'] != environment['screenData']['newTTY']):
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environment['runtime']['speechDriver'].cancel()
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diff = difflib.ndiff(environment['screenData']['oldContentText'], environment['screenData']['newContentText'])
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environment['screenData']['delta'] = ''.join(x[2:] for x in diff if x.startswith('+ '))
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environment['runtime']['speechDriver'].speak(environment['screenData']['delta'])
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# set new "old" values
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environment['screenData']['oldContentBytes'] = environment['screenData']['newContentBytes']
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environment['screenData']['oldContentText'] = environment['screenData']['newContentText']
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environment['screenData']['oldContentTextAttrib'] = environment['screenData']['newContentAttrib']
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environment['screenData']['oldCursor']['x'] = environment['screenData']['newCursor']['x']
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environment['screenData']['oldCursor']['y'] = environment['screenData']['newCursor']['y']
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environment['screenData']['oldTTY'] = environment['screenData']['newTTY']
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return environment
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